Splatoon 3 will feature a wide variety of clothes customization, as has been a staple of the series since the first game.
It was also confirmed that Splatoon 3 will be supported via updates for a significant amount of time after launch.
A 30-minute Nintendo Direct solely dedicated to Splatoon 3 aired earlier today, and will likely be the last big info dump prior to its September 2022 release.
The second phase will feature a new style of battle where the three teams play against each other at the same time.